Hello @ViewBag.Data.Firstname @ViewBag.Data.Lastname,
<br />
Congratulation, you have register new account from sterex.....
<br />

please click the link below to activate your account.
<br />
@{
    var activationUrl =  @Url.Abs(@Url.Action("Activate", "Account", new { Key = @ViewBag.ActivationKey}));
  }


<a href="@activationUrl">@activationUrl</a>

<br />
if you can not click on the link you can copy it then paste into browser.